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| 1 | +{ |
| 2 | + "cells": [ |
| 3 | + { |
| 4 | + "cell_type": "markdown", |
| 5 | + "metadata": {}, |
| 6 | + "source": [ |
| 7 | + "#### 题目描述\n", |
| 8 | + "对于一个 正整数，如果它和除了它自身以外的所有正因子之和相等，我们称它为“完美数”。\n", |
| 9 | + "\n", |
| 10 | + "给定一个 正整数 n， 如果他是完美数，返回 True，否则返回 False\n", |
| 11 | + "\n", |
| 12 | + " \n", |
| 13 | + "\n", |
| 14 | + "示例：\n", |
| 15 | + "\n", |
| 16 | + "- 输入: 28\n", |
| 17 | + "- 输出: True\n", |
| 18 | + "- 解释: 28 = 1 + 2 + 4 + 7 + 14" |
| 19 | + ] |
| 20 | + }, |
| 21 | + { |
| 22 | + "cell_type": "code", |
| 23 | + "execution_count": null, |
| 24 | + "metadata": {}, |
| 25 | + "outputs": [], |
| 26 | + "source": [ |
| 27 | + "class Solution(object):\n", |
| 28 | + " def checkPerfectNumber(self, num):\n", |
| 29 | + " \"\"\"\n", |
| 30 | + " :type num: int\n", |
| 31 | + " :rtype: bool\n", |
| 32 | + " \"\"\"\n", |
| 33 | + " return True if num in [6, 28, 496, 8128, 33550336] else False" |
| 34 | + ] |
| 35 | + } |
| 36 | + ], |
| 37 | + "metadata": { |
| 38 | + "kernelspec": { |
| 39 | + "display_name": "python pratice", |
| 40 | + "language": "python", |
| 41 | + "name": "env_name" |
| 42 | + }, |
| 43 | + "language_info": { |
| 44 | + "codemirror_mode": { |
| 45 | + "name": "ipython", |
| 46 | + "version": 3 |
| 47 | + }, |
| 48 | + "file_extension": ".py", |
| 49 | + "mimetype": "text/x-python", |
| 50 | + "name": "python", |
| 51 | + "nbconvert_exporter": "python", |
| 52 | + "pygments_lexer": "ipython3", |
| 53 | + "version": "3.7.1" |
| 54 | + }, |
| 55 | + "toc": { |
| 56 | + "base_numbering": 1, |
| 57 | + "nav_menu": {}, |
| 58 | + "number_sections": true, |
| 59 | + "sideBar": true, |
| 60 | + "skip_h1_title": false, |
| 61 | + "title_cell": "Table of Contents", |
| 62 | + "title_sidebar": "Contents", |
| 63 | + "toc_cell": false, |
| 64 | + "toc_position": {}, |
| 65 | + "toc_section_display": true, |
| 66 | + "toc_window_display": false |
| 67 | + } |
| 68 | + }, |
| 69 | + "nbformat": 4, |
| 70 | + "nbformat_minor": 2 |
| 71 | +} |
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